Sound device



FIG. 1 is a front perspective view of a sound device showing our new design;

FIG. 2 is a rear perspective view of the sound device in FIG. 1;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

The broken lines shown in the drawings depict the portions of the sound device that form no part of the claimed design. 

CLAIM The ornamental design for a sound device, substantially as shown and described. 